261.54% is the change from 91 to 329
Calculation steps:
[( 329 - 91 ) ÷ 91] x 100 = 261.54%
Formula
Percentage change = [(329 - 91) / 91] x 100
Subtract the new number by the original number
329 - 91 = 238
238 ÷ 91 = 2.6153846153846154
2.6153846153846154 x 100 = 261.54%